Chuck for emery-wheels.



No. 648,955. Patented May 8, I900. E. A. HENDRICKS & w. WOLLERT. CHUCKFOR EMERY WHEELS.

(No Model.) (Application filed June 9, 1899.) 2 shank-sheet d y 729- a5. 8

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E. A. HENDRICKS & w. WOLLERT.

CHUCK FUR EMERY WHEELS.

4 (Application fild June 9, 1899.) (No Model.)

2 SheatsSheet 2.

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UNITED STATES PATENT Fri-GE.

EDI/VARD HENDRICKS AND I/VILLIAM .WVOLLERT, OF OARPENTERSVILLE,ILLINOIS, ASSIGNORS TO THE SAFETY EMERY WHEEL COMPANY, OF

SPRINGFIELD, O'IIIO.

CHUCK FOR EM ERY-WHEELS.

SPECIFICATION forming part of Letters Patent No. 648,95 5, dated May 8,1900.

Application filed June 9, 1899. Serial No. 719,888. (No model.) I

To all whom it may concern.-

Be it known that we, EDWARD A. HEN- DRICKS and WILLIAM WoLLnnr, citizensof the United States, residing at Carpentersville, in the county of Kaneand'State'of Illinois, have invented certain new and useful Improvementsin Chucks for Emery-Wheels,

, of which the following is a specification.

Our invention relates to improvements in chucks for emery-wheels, and itespecially relatesto that class of chucks which are adaptedto clamp orinclose the outer surface of the wheel, leaving one end thereof exposedfor use.

The object of our invention is to improve upon the construction ofdevices of this character heretofore employed and provide means forsecurely clamping the wheel within the same and at the same timerendering the same easily and quickly adjustable to compensate for wearthereon. We attain this object by the construction shown in theaccompanying drawings, in which-- Figure 1 is a sectional view of adevice em- 2 5 bodying our invention. Fig. 2 is a plan View of the outershell or casing of the device.

Fig. 3 is a plan view of the retaining'ring or wedge, and Fig. 4 is adetail of the same.

Fig. 5 is a view of one of the clamping-bolts. Fig. 6 is a sectionalView of the adjusting ring or nut; and Figs. 7 and S are top and bottomviews, respectively, of the rings. Fig. 9 is a sectional View of thedevice, showing the adj usting-nut for the wheelreversed.

Like parts are represented by similar letters of reference in theseveral views.

In constructing ourimproved device We employ an outer shell or casingwhich consists of an outer rim a, open at one .end but 40 closed at theother by a portion a, which is provided with a hearing or sleeve 0. forthe driving-shaft of the device. The outer rim to is provided withperipheral flanges a 0.

which flanges are perforated at suitable intervals for the reception ofclamping-bolts a,

any suitable number of which may be em- 7 ployed, six being shownin thepresent construction. The end portion a of this outer shell or casing isprovided with an inwardlyextending hub a screw-threaded on its outer 5operiphery, and on this hub a there is adapted to fit a screw-threadedadjusting nut or ring b, one end of which is provided with an annularflange b, the emery-wheel 0 being seated on this adjusting-nut b andbears against the flange b thereof.

Between the wheel 0 and theouter rim or we place a clamping ring orwedge d, the inner periphery of which is adapted to snugly fit the wheel0 the entire width of the wedge or ring. The outer periphery of thewedge or ring is formed tapering, as shown in Fig. 1, the outer rim a ofthe shell or casing being formed at such an angle as to correspond tothe taper of the wedge or ringd and present an even surface theretothroughout the width thereof. In order to lighten the construction ofthis ring dand prevent the same from sticking in order that thesame maybe easily removed, we preferably plane out portions of the peripherythereof from sideto side, leaving tapered projections or ribs 01, and inorder that the said wedge may conform to the slight variations in thesizes of the emerywheels used we also preferably construct the said ringin sections of any suitable number, three sections being shown in thiscase, as illustrated in Fig. 3 of the drawings. Any number of the ribsor projections d may be employed, twelve being shown in the drawings.The wedge or ring havingbeen inserted in place, the same is caused totightly clamp the emery-wheel by firmly wedging the said ring betweenthe wheel and the. outer rim a by means of the tightening-bolts a, andto ac complish this we provide the said bolts with. right-angled ends awhich areadapted to fit in sockets 01 formed in the end of said wedge orring adjacent thereto. There being six tightening-bolts in the presentcase, 0 we have shown the sockets formed-in the end of each alternaterib or projection 01'. The

ends a of said bolts havingbeen inserted in the sockets the bolts aretightened by means of the nuts on the opposite ends thereof and theparts thus firmly clamped together. By this construction it will be seenthat the emerywheel will be clamped evenly and truly for the entirewidth of the wedge or ring and cannot get out of balance. Theconstruction also renders the device perfectly safe to the operator, asno more of the stone need be exposed than is necessary in use. The wheelcan be readily adjusted to compensate for wear by simply loosing theclamping-bolts ct and by inserting a suitable tool to engage with thesockets b in the end of the adjusting-nut b, turning the adjustingnutsoas to move the wheel the required distance. end of the nut reaches theouter threads of the hub, so that further movement thereof,

in that position is impossible, the said nut may be reversed, as shownin Fig. 9, in order to still further adjust the remaining part of thestone, the other side of the flanged portion of the nut in this casebearing against the end of the stone or Wheel and being pro vided withsockets b to enable the same to be turned by a suitable tool in likemanner.

Having thus described our invention, we claim 1. In an emery-wheelchuck, an outer inclined rim, an emery-wheel within said outer rim, aretaining ring or wedge interposed between said wheel and rim, extendingsubstantially over the full width of said wheel, and means fortightening said ring or wedge in said rim, substantially as specified.

2. In an emery-whcel chuck, .an outer casing, a wheel within saidcasing, said casing being provided with an inwardly-extending As thewheel wears and the flanged screw-threaded hub, a screw-threaded nut onsaid hub, one endof said nut being provided with a flange adapted tobear against the inner end of said wheel for the purpose of adjustingsaid wheel, substantially as specified.

3. In an emery-wheel chuck, an outer casing open at one end, the side ofsaid casing being formed inclined as described, an em ery-wheel in saidcasing and a sectional retaining ring or wedge interposed between saidwheel and outer casing, the inner periphery of said retaining-ring beingadapted to snugly fit the outer periphery of said wheel, and the outerperiphery of said retaining-ring being formed tapering to correspond tothe incline of said casing, clamping-bolts on said outer casing formedwith projections at one end to engage recesses in said retaining-rings,said outer casing being provided with an inner screw-threaded hub, ascrew-threaded nut or sleeve, on said hub, a flange on said nut orsleeve adapted to bear against the end of said wheel to hold it indifferent positions of adjustment, and means for tightening saidclamping-bolts to clamp said wheel in said outer casing, substantiallyas specified.

In testimony whereof we have hereunto set our hands this 3d day of June,A. D. 1890.

EDWARD A. HENDRICKS. IVILLIAM WOLLERT.

\Vitnesses:

WALTER F. WALKER,

VM. A. DUNTON.

